What is the reason to gunk builds up on the chain?
- Thread starter endred
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Maybe all of the above. Looks like maybe some questionable cutters on your chain. Can you post a better pic of the tops and sides of the cutters? Bar oil will also collect dust.
endred
ArboristSite Lurker
Gave it a clean and sharpening.. Going to press inn the pin to the left of the oiler adjuster and set the it on max. Right now its only on max on the E position.
Having another go tomorow. See how it works now. Some pics of the cutters
Having another go tomorow. See how it works now. Some pics of the cutters
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Looks great after you sharpened it! Are your angles the right degree? Oak is kinda a nasty wood to saw. I always thought is as being like cutting dirt! Seams like it makes fine powder instead of chips.
Resin build up on chain depend on a number of factors
The main one is probably the type of tree. Some trees will cut clean no matter what you do, and some will deposit resin on chain no matter what you do.
The worst one I have dealt with is a Eucalyptus called Tuart. It's hard as nails, pulls up silica when water stressed, and releases a resin that turns black on the chain.
Not many millers will even mill it.
An old time Tuart faller told me about how he kept a pump pack of diesel handy and would spray it onto his chain when he had finished cutting. This softened the resin so that next time that chain hit wood, the resint came off within a few seconds. I've tried this and it does work really well for Tuart. What I found also works is continuing to run the aux oiler at the end of a cut for about 30s while the chain is just turning. This way the oil doesn't get flung off at the nose and drive sprockets so the chain gets a liberal coating of bar oil. This seems to work just as well as the diesel for most resins.
Blunt chains, pushing too hard, and insufficient bar&chain soil generate more heat so can add to resin build up. Blunt chains also generate more dust and fewer chips so more resin is able to exude out of the sawdust.
The main one is probably the type of tree. Some trees will cut clean no matter what you do, and some will deposit resin on chain no matter what you do.
The worst one I have dealt with is a Eucalyptus called Tuart. It's hard as nails, pulls up silica when water stressed, and releases a resin that turns black on the chain.
Not many millers will even mill it.
An old time Tuart faller told me about how he kept a pump pack of diesel handy and would spray it onto his chain when he had finished cutting. This softened the resin so that next time that chain hit wood, the resint came off within a few seconds. I've tried this and it does work really well for Tuart. What I found also works is continuing to run the aux oiler at the end of a cut for about 30s while the chain is just turning. This way the oil doesn't get flung off at the nose and drive sprockets so the chain gets a liberal coating of bar oil. This seems to work just as well as the diesel for most resins.
Blunt chains, pushing too hard, and insufficient bar&chain soil generate more heat so can add to resin build up. Blunt chains also generate more dust and fewer chips so more resin is able to exude out of the sawdust.
Gullets look ok but your top angles are about the same as a ripping chain - which will create a lot of dust. Maybe this was a ripping chain to begin with? You need to file the angle away from the corner. There are lots of posts here showing the correct angle.
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endred
ArboristSite Lurker
It is a ripping chain.. Milled some oak logs. 10 degrees. Forgot to mention that in the first post.
The ripping chain on my 36" mill will bring out a LOT of big chips with a small amount of coarse dust,-- and NO fine powder
Milling generally creates more fine chips and dust since you are cutting end grain. This Ash was dead standing. Yes, the type and condition of the wood will make a difference as well.
